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Current Sensor

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TechnoMan1

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I'm using the RS 304 267 hall effect current sensor, inputting the voltage output of it into an A2D converter.
The A2D converter uses a reference voltage to determine the smallest voltage change required to result in a change of 1 bit of the output. The A2DC outputs 8 bits and therefore the reference voltage is divided by 256 to determine the smallest input voltage change that results in a change in bit output. A display then uses these 8 bits to display a value.
The data sheet for the RS 304 267 shows a relationship between Gauss(which it uses as 'input') and voltage(output). This is tricky to use since I want to use the bits that is the output of the A2DC to display current. This means i have to find a relationship between gauss and current so i know what current corresponds to the output voltage. Is there any way to use this same current sensor so i know what current corresponds to the voltage being outputted? Or perhaps, another current sensor that actually takes current as an input? I would prefer an arrangement that takes an input current and gives an output voltage depending on the input.
 
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